Viewing archive of Friday, 20 December 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Dec 20 1230 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
20 Dec 2019	070	007
21 Dec 2019	070	007
22 Dec 2019	070	007

Bulletin

Solar X ray flux remained below B level throughout the period. There are no spotted regions on disk and X-ray flux is expected to remain at background levels.

No Earth-directed CME's were detected in coronagraph images.

Solar high energy proton fluxes were at background levels and are expected to remain so.

Solar wind conditions have seen the expected decline of the high speed stream. Solar wind speed decreased from just under 550 km/s to under 450 km/s. Total magnetic field was stable around 4nT with a variable Bz component. Solar wind conditions are expected to further decline over the next days.

Geomagnetic conditions were quiet (NOAA Kp and local K Dourbes 0-2) and are expected to remain quiet over the next days.

Today's estimated international sunspot number (ISN): 000, based on 07 stations.

Solar indices for 19 Dec 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	017
AK Wingst	012
Estimated Ap	013
Estimated international sunspot number	000 - Based on 14 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

All times in UTC

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